package note1.chapters.chapter9;

interface I1 {void f();}
interface I2 {int f(int i);}
interface I3 {int f();}
class C {public int f() {return 1;}}

class C2 implements I1, I2 {
	public void f() {}
	public int f(int i) {return 1;}
}

class C3 extends C implements I2 {
	public int f(int i) {
		return 0;
	} 
}

class C4 extends C implements I3 { // Identical. no problem
	public int f() {
		return 1;
	}
}

// class C5 extends C implements I1 {}

//interface I4 extends I1, I3 {}
